Arm Holdings

Over its last 20 sessions ARM has moved 4.06% on a typical day, making it one of the most volatile of the stocks Kinzan tracks (their median is 1.81%).

At +0.0σ, the last 24 hours have been an entirely ordinary session for ARM.

It sits in the lower half of its 24-hour range of 208.25–215.38, measured on hourly closes.

The London block (07:00–13:00 UTC) did most of the work — roughly 55% of the movement over the last 24 hours.

Over the last 60 sessions of daily returns, it has moved most closely with INTC (+0.78, a strong relationship), and most inversely to BRENT (−0.52).

Its last close is at the 3rd percentile of its own last 82 sessions, and its 20-day volatility at the 18th.

Market read: Arm Holdings is struggling to find direction, currently sitting in the middle of its daily range.

What it is

Arm is a British company, based in Cambridge, that designs processor architectures and the cores built on them but manufactures nothing. Its instruction set runs in nearly all smartphones and a growing share of servers, PCs and cars. Licensees pay an upfront fee for access to an architecture or a specific design, then a royalty on every chip shipped that contains it, so a design signed today can earn for many years. Newer architecture versions and pre-integrated compute subsystems carry higher royalty rates than older ones, which lets revenue grow faster than unit volumes. SoftBank Group owns the large majority of the shares, and the Nasdaq listing, dating from 2023, takes the form of American depositary shares.

What drives it

Royalty-rate expansion is the core of the growth story: moving customers onto newer architectures and subsystems raises the take per chip even in a flat handset market. The second driver is share gain beyond phones. Cloud operators designing their own server processors have largely chosen Arm, and progress in Windows PCs and in-vehicle computing widens the base the royalty is charged on. China is a particular exposure, since much of the business there runs through a separately controlled local entity. The valuation is high relative to revenue, which makes the shares sensitive to any cooling in growth expectations, and the small free float left by the parent’s dominant holding can magnify moves in both directions.

How it trades through the day

Although the company is British, its only listing is on Nasdaq, so price discovery happens in the US cash session: 13:30 to 20:00 UTC in summer, 14:30 to 21:00 UTC in winter. Its parent trades in Tokyo during the Asia block, and moves there are sometimes read across before New York opens. The fiscal year ends in March, and results are released after the close. Realised volatility sits well above the semiconductor average.

What it tends to move with

It trades as a high-multiple member of the semiconductor complex and tends to amplify the group’s direction. The most direct links are with the chip designers among its largest licensees, Qualcomm and Apple included, and with the smartphone cycle. News about SoftBank, including how it funds its own investments, has at times moved Arm too.